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ALISMACE/E. | 
Alisma Plantago, L....................005- Water Plantain 
var. Americana, Gray. 
Marein of Niagara River above the Falls. 
Sagittaria variabilis, Fngelmann.................. Arrow-Head 
Above the Falls in wet places on the Canadian side. 
Sagittaria heterophylla, Pursh. 
Niagara River, near LaSalle. Clinton. 
Triglochin palustre, L. 
Wet ground above Clifton, Ontario. Of unusual size. 
NATADACE. 
Naias flexilis, Rostk.......................085. Lees eee. Naiad 
Niagara River above the Falls. | 
Zannichellia palustris, L................ Horned Pondweed 
Abundant in the upper portion of Niagara River and therefore to 
be expected nearer the Falls. 
Potamogeton natans, L...................-. 00008. Pondweed 
Niagara River near Strawberry Island. Clinton. 
Potamogeton hybridus, Michx................... Pondweed 
Black Creek, Ontario, opposite Grand Island. | 
Potamogeton rufescens, Schrader..........:...... Pondweed 
Niagara River. Rev. Thomas Morong. 
Potamogeton fluitans. Roth. (P. lonchites, Tuckerman.)..Pond- 
weed. 
Niagara River. ev. Thomas Morong. 
Potamogeton lucens, L..................... Leeeee Pondweed 
Niagara River. 
Potamogeton amplifolius, Tuckerman............. Pondweed 
Niagara River. Lev. Thomas Morong. 
Potamogeton gramineus, L...................... Pondweed 
var. heterophyllus, Fries. 
Niagara River. 
var. elongatus, Morong. oo 
Niagara River. Rev. Thomas Morong. 
Potamogeton preelongus, Wulfen................. Pondweed 
Niagara. Provancher, Flore Canadienne, p. 62. 
Potamogeton perfoliatus, L...................... Pondweed 
var. lanceolatus, Robbins. 
Niagara River. ev. Thomas Morong. 
